Oliver m



(No Model.)

O. M. MITCHELL.

BICYCLE BEARING. No. 296,708. Patentd Apr. 8, 1884.

WI TNEEEEE. .Z'NV' IN 2-H:

6IAQI5MQ4 l 1;

UNITED; STATES PATENT OLIVER M. MITCHELL, OF PROVIDENCE, RHODE ISLAND.

BICYCLE-BEARING.

SPECIFICATION forming part of Letters Patent No. 296,703. dated April 8, 1884.

Application filed January 17, 1884. (No model.)

To all whom it may concern:

Be it known that I, OLIVER M. MITOHELL, of the city and county of Providence,and State 'of Rhode Island, have invented a new and useful Improvement in BicycleBearings, of which the iollowing is a specification.

My invention relates to cone-bearings for bicycle-wheels; and the object of my invention is to produce a cone-bearing which may be adjusted so as to embrace the spindle more or less tightly, while at the same time retain its rigidity.

My invention consists in a cone-bearing which is provided at each end with an eXter nal screw-thread and a nut for each screwthreaded end of said hearing.

In the accompanying drawings, Figure 1 is a side view of my improved bearing. Fig. 2 is an end view of the same. Fig. 3 is a longitudinal section of the same. Fig. 4 is a detached view in side elevation of the cone-bearing ring In the said drawings, A designates the conebearing, which is a split ring, as indicated at X, and is of bearing metal. The center of the ring is formed externally with an oblique or conical section, a, and at each end with a screw-thread, c. r

B designates the bearing rim, which is formed with a central internal oblique portion 1), the pitch of which corresponds to that of the oblique portion a. The rim B is also formed with a channel, I), for lubricant, extending entirely through the rim. A pin, 12*, is also formed on the inner side of the rim B, in longitudinal alignment with the channel I).

c is an arm secured pivotally at one end, and resting at the other end arranged to overlap the channel 5, so as to confine the lubricant in the channel I).

B designates the eye, to which the corresponding end of the fork is attached, and G C the nuts by which the ring A is adjusted. In using this improved bearing the bearingring A is slippedinto the rim or collar B in such manner that the pin 1; shall enter the hug the axle tightly,the nut O is screwed well up on the ring, so as to force its oblique sides a well against the oblique portion 12 of the rim, whereby the ring A is compressed. The nut C is now screwed on and is in this instance virtuallyinoperative. When the bearing is to be loosened, the nut G is unscrewed to a certain extent and the nut O is correspondingly tightened, whereby the ring A is relieved of a proportionate degree of compression, and yet is held rigidly in its seat.

This form of bearing is a valuable addition to a bicycle, for the reason that it affords a simple and efficient means for taking up wear on the bearing, and also because it meets the demand for a hearing which may be readily adjusted to the requirements of the rider in short and smooth trips, or in long and rough ones.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination, with the rim B, having the oblique portion 1), of the split bearing-ring A, provided with threaded ends and the oblique portion a, and the nuts (3 0, arranged and operating as set forth.

2. The combination, with the split ring bearing A, having the oblique portion a and the screw-threads a a, of the rim B, having the oblique portion the channel I), the pin 15 and the pivoted arm 0, and the nuts 0 0, arranged and operating as set forth.

In witness whereof I have hereunto set my hand.

OLIVER M. MITCHELL.

W'itnesses:

J. A. MILLER, J12, M. F. BLIGH. 

